# Which of the following is true for the complexes $[Ni(CN)_4]^{2-}$ and $[NiCl_4]^{2-}$

$\begin{array}{1 1}(a)\;\text{They have same shape}\\(b)\;\text{They have same primary valency}\\(c)\;\text{They have same magnetic moment}\\(d)\;\text{They have same hybridisation}\end{array}$

They have same primary valency is true for the complexes $[Ni(CN)_4]^{2-}$ and $[NiCl_4]^{2-}$
Hence (b) is the correct answer.